Disk Utility Partition Problem

I have an 6-month old 80GB Samsung SP0822N 80GB HD I was using on a PC and decide to erase everything on it and use it as my backup. However disk utility only sees it as a 31.5GB hd when ever I try to erase or partition!!! What do you is going on here?
Any help is greatly appreciated.
Clyde

OK. You really didn't answer all of my question 2. Sounds like it was partitioned into 2 or more partitions on the PC and at least one partition was formatted as NTFS. Mac OS X can read, but not write to, NTFS volumes. You might want to try reformatting the entire drive as FAT32 on a PC, then seeing if you can reformat it as Mac OS Extended (HFS+) on the Mac.
You might also want to contact the manufacturer of the enclosure to see what they think.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X

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